AIS

• aeronautical information service

  General

• aeronautical information specialist

  General

• airport in sight

  General

AIS has 3 meanings; the right one depends on context. A weather report, a NOTAM or an ATC clearance. Got a NOTAM full of contractions? Paste it into the decoder.

Source: FAA Order JO 7340.2 Contractions. Not for operational use.